no_cache()

[Rasoul Hajikhani]

Hello folks,
I am using $request_object->no_cache(1) with no success. Isn't it
supported any more? Can some one shed some light on this for me...

         #set the content type
        $big_r->content_type('text/html');
        $big_r->no_cache(1);

        # some more code

        return OK;

thanks in advance.
-r